Here's an interesting tidbit. On the Corvette side of the world, it's known that the wire clamp was used on ALL engines in 1967. Since both Corvette and Camaro engines (as well as all the rest of the divisions) were assembled at Tonawanda and Flint, I can't see any 1967 engines using the stamped clamp.

I'd be shocked if there are no other members here that have a BB 67 or 68 to reply to.I'm not that lucky to have two 67 L35 BB's and both have the stamped clamp, especially on the survivor I have had since 1980.I'll go play Lotto now

That's why this is such a mystery Mike. Your two engines should NOT have the stamped clamp and the 69 Corvette Bob referenced above SHOULD!! I can see this is going to be another one of those items that'll drive us all nuts!!

Ed - Well, here is more more interesting info. I found this picture in the '68 Chassis manual. Unfortunately, the picture is for a 6 cylinder engine but the interesting thing to note is that it clearly shows the wire type clamp.

Mike - What is the build date on your cars?

It's still a mystery to me why some cars have stamped clamps and others have wire clamps, particularly in light of what Ed reported in an earlier post. It also doesn't look like there is a rhyme or reason as to which size engine got which clamp since the Chassis manual shows a wire clamp on a 6 cylinder engine.

Bob, 6 cylinder cars got the wire clamps from the beginning of time! Even way into the 70's. I don't think 6 bangers ever got a stamped clamp, but of course, in light of what we're seeing, who knows!

You can't go by images in the service manuals. Most of the time they just found a picture that was good enough to show what was being referenced. It may be from a prior (or even several years before) and may not even be a Chevrolet part! HERE'S another example of what I mean.

Well, I didn't think I'd cause such an in depth discussion when I posted my original question! I figured surely someone must have run into this during their restoration, I'd get my answer and continue on with my project. Boy was I wrong!!

Anyway, I thought I would start to tabulate what we know so far from all of the previous posts:

Hi Ed, Good compliation. As a suggestion, I think it would be more granular if the engine assembly date was recorded too being some units sat on the rack from days to months before being placed in the chassis. Maybe something like below?